US20070013122A1 - Sunction device and method of conveying laminated sheet - Google Patents
Sunction device and method of conveying laminated sheet Download PDFInfo
- Publication number
- US20070013122A1 US20070013122A1 US11/523,592 US52359206A US2007013122A1 US 20070013122 A1 US20070013122 A1 US 20070013122A1 US 52359206 A US52359206 A US 52359206A US 2007013122 A1 US2007013122 A1 US 2007013122A1
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- United States
- Prior art keywords
- suction
- laminated sheet
- conveying
- adhesive sheet
- sheet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
- B65H23/24—Registering, tensioning, smoothing or guiding webs longitudinally by fluid action, e.g. to retard the running web
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H20/00—Advancing webs
- B65H20/12—Advancing webs by suction roller
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
- B65H23/32—Arrangements for turning or reversing webs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2301/00—Handling processes for sheets or webs
- B65H2301/30—Orientation, displacement, position of the handled material
- B65H2301/31—Features of transport path
- B65H2301/311—Features of transport path for transport path in plane of handled material, e.g. geometry
- B65H2301/3112—S-shaped
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2404/00—Parts for transporting or guiding the handled material
- B65H2404/50—Surface of the elements in contact with the forwarded or guided material
- B65H2404/51—Cross section, i.e. section perpendicular to the direction of displacement
- B65H2404/512—Cross section, i.e. section perpendicular to the direction of displacement concave
Definitions
- suction devices capable of conveying a laminated sheet by contact with only one side surface, for example conveying an adhesive sheet to form an adhesive layer on film, and a method of conveying laminated sheets.
- the present invention relates to the art of changing the tension occurring in the laminated sheet and changing the conveying direction of a conveyed sheet.
- an adhesive sheet in which an adhesive layer is formed on a base film is exposed in an intermediate process.
- the adhesive sheet cannot be interposed between a pair of conveying rollers. Therefore, such an adhesive sheet 2 is conveyed by using a suction roller 3 as shown in FIG. 3 , so that the suction roller 3 is only in contact with the surface of the base film layer and not in contact with the surface of the adhesive layer.
- the suction roller 3 in this case has a plurality of suction holes formed on the outer peripheral surface of a hollow cylindrical roller, for example.
- the adhesive sheet 2 is held by suction on the outer peripheral surface by vacuum suction inside the shaft through the suction holes.
- the suction roller 3 holds and conveys the adhesive sheet 2 with rotation of the roller. See “Product Information Ni Net Suction Roll”, URL:http:www2s.biglobe.ne.jp/ ⁇ hikoyama/sakushon.htm (last verified Jan. 26, 2004).
- the suction roller 3 has the function of releasing the tension occurring in the adhesive sheet 2 by applying suction to and holding the adhesive sheet 2 .
- the adhesive sheet 2 can be conveyed only by bending the adhesive sheet 2 to the non-adhesive side (film side) not only limits the conveying route or passage itself, but also limits disposition of equipment on the conveying passage, and further causes the problem that such a conveying passage cannot be introduced into existing facilities.
- the position of the existing suction roller 3 must be changed or an additional suction roller 3 has to be added in order to increase the winding angle of the adhesive sheet 2 so that the tension of the adhesive sheet 2 can be released. If the position of the suction roller 3 is changed, the transfer passage changes, and as a result, the adhesive sheet 2 cannot be introduced into an existing drier chamber or the like such that the tension has been released in the adhesive sheet 2 .
- a suction device which is capable of changing the conveying passage or route and is able to convey a laminated sheet without causing the laminated sheet to slip. This is accomplished by maintaining a sufficient suction force on the adhesive sheet irrespective of the direction taken by the conveying passage.
- the present invention achieves the above described objectives by providing a suction device which holds and conveys a sheet-shaped member.
- the suction device includes a suction roller which holds and conveys a laminated sheet having a coating layer formed on the sheet while holding the sheet on an outer peripheral surface, and a vacuum chamber having a concave shaped suction part which holds the aforesaid laminated sheet while closely holding the sheet in a concave shape.
- the vacuum chamber is disposed so that the suction part is upstream in the conveying direction from the suction roller in order to form an S-shaped conveying passage with the outer peripheral surface of the suction roller.
- the present invention provides a method of conveying a laminated sheet having a coating layer formed on the sheet, including the steps of holding and conveying the laminated sheet in a concave shape, and thereafter, holding and conveying the laminated sheet in a convex shape.
- the conveying passage of a laminated sheet can be changed as needed.
- the invention includes an S-shaped conveying passage in cross-section formed by the combination of a suction roller for holding and conveying a laminated sheet and a vacuum chamber having a concave shaped suction part for holding a laminated sheet.
- the present invention can convey a laminated sheet without the laminated sheet slipping irrespective of the direction of the conveying passage, because a sufficient suction force is provided by both the suction roller and the vacuum chamber.
- FIG. 1 is a front view showing an exemplary construction of a suction device
- FIG. 2 is a perspective view showing an exemplary construction of a vacuum chamber
- FIG. 3 is a view showing a conventional method for conveying an adhesive sheet using a suction roller.
- a suction device 1 is installed at the spots where a conveying passage of an adhesive sheet 2 is changed, and/or where tension of the adhesive sheet 2 should be released, in an intermediate process step of conveying the adhesive sheet (laminated sheet) 2 .
- the adhesive sheet 2 comprises an exposed adhesive layer (coating layer) formed on the surface of one side of a base film (sheet).
- This suction device comprises a suction roller 3 and a vacuum chamber 10 , which are constructed as a set.
- the suction roller 3 is a hollow cylindrical roller similar to ordinary rollers in which a plurality of suction holes is formed on the outer peripheral surface. The inside thereof is sufficiently hollow to enable a vacuum pump (not shown) to produce suction at the holes.
- a suction roller 3 holds the adhesive sheet 2 by suction through the suction holes formed on the outer peripheral surface of the suction roller 3 while contacting the surface of the non-adhesive side of the base film.
- the suction roller 3 holds the adhesive sheet 2 by suction and conveys it with rotation.
- the vacuum chamber 10 is in a hollow box-shape which holds the adhesive sheet 2 by suction.
- the inside of the vacuum chamber 10 is constructed to allow evacuation by a vacuum pump (not shown).
- the section force of the vacuum chamber 10 with respect to the adhesive sheet 2 is set at a desired value by pressure adjustment of the vacuum pump.
- the suction force of the vacuum chamber 10 is set to be larger than the tension force occurring to the adhesive sheet 2 upstream in the conveying direction (hereinafter “upstream side”), and the suction force has the function of releasing the tension.
- a suction support part (suction part) 11 has a concave surface (for example, a partial-circle shaped surface) at the front face portion of the vacuum chamber 10 .
- Guide parts 12 having a concave surface extending beyond the surface of the suction support part 11 are formed at both sides of the suction support part 11 .
- the suction support part 11 comprises a double curved surface structure, and includes a suction part 13 at the inside and a conveying and supporting part 14 on the outside.
- a plurality of suction holes 13 a are arranged in a predetermined pattern on the concave plate to form a concave suction surface 13 A, so that the adhesive sheet 2 by means of the surface on the non-adhesive side of the base film, is uniformly held by suction through the suction holes 13 a of the concave suction surface 13 A.
- a plurality of rotary shafts (rotary bodies) 14 a pivotally supported at both sides by the guide parts 12 are, for example, horizontally provided at specific intervals, resulting in a concave support surface 14 A.
- an adhesive sheet 2 is movably supported while held in a concave manner on the concave support surface 14 A.
- the respective rotary shafts 14 a are disposed so that the concave support surface 14 A becomes coaxial with the concave suction surface 13 A.
- the vacuum chamber 10 is disposed in the vicinity upstream of the suction roller 3 so that the concave support surface 14 A connects to the outer peripheral surface of the suction roller 3 to form a conveying route S-shaped in cross-section.
- Suction device 1 holds the adhesive sheet 2 by a suction force shown by arrows Q in FIG. 1 , holding an adhesive sheet 2 against the concave support surface 14 A of the vacuum chamber 10 .
- the suction roller 3 holds and conveys an adhesive sheet 2 by providing a suction force in the centripetal direction and by providing a conveying force in a tangential direction to the adhesive sheet 2 when it is on the outer peripheral surface of the suction roller 3 , as shown in FIG. 1 .
- the radius of curvature of the concave support surface 14 A of the vacuum chamber 10 can be chosen irrespective of the radius of the outer peripheral surface of the suction roller 3 .
- the radius of curvature of the concave support surface 14 A is about the same as the radius of the outer peripheral surface of the suction roller 3 .
- the necessary central angle of the concave support surface 14 A is relative to the relationship between the position of the suction roller 3 and the set pressure of the vacuum pump. It is large in the case of large suction forces on the adhesive sheet 2 .
- the central angle is set at 180° in this example, whereby the conveying passage of the adhesive sheet 2 is inversed by 180°.
- FIG. 1 is the case where an adhesive sheet 2 with the adhesive layer on the top surface is conveyed from the upstream side (left side in FIG. 1 ) to the downstream side (right side in FIG. 1 ) with respect to the suction device 1 .
- a method of conveying the laminated sheet of the present example is hereafter described.
- the adhesive sheet 2 is held by suction and conveyed while the base film (sheet) is in close contact with the vacuum chamber 10 in a concave shape. This results in a reverse of the conveying direction. Thereafter, the adhesive sheet 2 is held and conveyed by the suction roller 3 while the base film is in close contact with the outer periphery of the suction roller 3 giving the adhesive sheet 2 a convex shape.
- the vacuum chamber 10 is disposed in the vicinity to the lower right of the suction roller 3 in FIG. 1 , and the concave support surface 13 A of the vacuum chamber 10 connects to the outer peripheral surface of the suction roller 3 via an inflection point tangential line such that the conveying passage forms an S-shape in cross-section.
- the conveying passage S 1 is divided into a plurality of conveying branch passages as it passes from a point P 1 to point P 7 .
- the conveying branch passages P 1 to P 2 are conveying passages on the concave support surface 14 A of the vacuum chamber 10 .
- the uniform suction force Q acts on the concave suction surface 13 A by vacuum from the suction part 13 .
- the adhesive sheet 2 is held against the entire surface of the concave support surface 14 A to cause its film surface to be in close contact with the rotary shafts 14 a .
- the adhesive sheet 2 is thus in the state in which it is tangentially movable on each of the rotary shafts 14 a.
- the conveyer passages P 3 to P 7 are the conveying passages on the outer peripheral surface of the suction roller 3 .
- uniform suction force acts through the outer peripheral surface of the suction roller 3 by suction in the inside of the shaft of the suction roller 3 .
- the adhesive sheet 2 is held through the range of P 3 to P 7 of the outer peripheral surface, and its film surface is brought into close contact with the outer peripheral surface of the suction roller 3 .
- the conveying force in the tangential direction acts on the adhesive sheet 2 , and the adhesive sheet 2 is fed in the direction of the arrow B via point P 7 while the adhesive sheet 2 is rotated with the suction roller 3 by the above-mentioned conveying force.
- the adhesive sheet 2 is laid on the two conveying passages each in the shape of the concave curved surface connected with the inflectional tangent while being held by the vacuum chamber 10 and the suction roller 3 , and is held and conveyed by the suction roller 3 .
- the tension occurring to the adhesive sheet 2 on the upstream side of the point P 1 is released by the suction force through the concave support surface 14 A, and the tension is newly set during the range from P 3 to P 7 on the outer peripheral surface of the suction roller 3 by various factors such as the suction force and rotational speed of the suction roller 3 .
- the conveying passage S 2 passes from the point P 1 to the point P 6 .
- the conveying passage S 2 differs from the above described conveying passage S 1 because the suction force and the conveying force do not act on the adhesive sheet 2 in the range from P 6 to P 7 on the outer peripheral surface of the suction roller 3 .
- the range of the conveying direction with respect to the adhesive sheet 2 conveyed from direction A is changeable between the direction of arrow B and the direction of arrow E.
- the suction roller 3 is moved diagonally downward, whereby the point P 4 moves to the point P 4 ′ which is diagonally downward from the point P 4 , and the conveying passage moves from the direction of arrow E to the direction of E′ which is diagonally downward from the direction of arrow E.
- the insufficient amount of suction force and conveying force caused by the decrease in the winding angle of the adhesive sheet 2 must be compensated by the suction force of the vacuum chamber 10 by an increase in the diameter of the suction roller 3 and by an increase in pressure of the vacuum pump.
- the conveying passage of adhesive sheet 2 can be changed as desired by increasing or decreasing the winding angle of adhesive sheet 2 on the suction roller 3 which is positioned downstream in the conveying path.
- the S-shaped conveying passage is formed from the combination of the suction roller 3 for holding and conveying and the vacuum chamber 10 having a concave support surface 14 A for vacuum holding.
- a sufficient suction force can be secured with both the suction roller 3 and the vacuum chamber 10 irrespective of the direction of the conveying passage, and therefore, the adhesive sheet 2 can be conveyed without slippage.
- the concave support surface 14 A formed by the arrangement of the rotary shafts 14 a is located at the outside of the concave suction surface 13 A of the suction part 13 . Therefore, the rotational driving force of the suction roller 3 can be reduced by decreasing the contact resistance of the adhesive sheet 2 .
- the suction force of the vacuum chamber 10 is set to be larger than the upstream tension occurring in the adhesive sheet 2 because the tension can be released only by the vacuum chamber 10 . Thereafter the tension in the adhesive sheet 2 can be varied by changing the setting of various factors relating to the suction roller 3 .
- the rotary body which supports the laminated sheet in a curved shape at the suction part in order to reduce the contact resistance of the laminated sheet.
- the rotary body is not limited to the rotary shaft of the above described examples, but may be a plurality of rotary rollers supported on a shaft such as beads on an abacus.
- the adhesive sheet may be curved in a concave manner and directly brought into close contact with the suction part.
- Laminated sheets to which the present invention can be applied may be any sheet as long as it can be held by only one side surface, and such laminated sheets include not only adhesive sheets in which an adhesive layer is formed on a base film but also magnetic film with a magnetic layer (coating layer) formed on the film.
Abstract
Description
- This is a continuation application of International Application No. PCT/JP2005/005865 filed Mar. 29, 2005. The entire disclosure of the prior application is hereby incorporated by reference herein its entirety.
- Related technical fields include suction devices capable of conveying a laminated sheet by contact with only one side surface, for example conveying an adhesive sheet to form an adhesive layer on film, and a method of conveying laminated sheets. Particularly, the present invention relates to the art of changing the tension occurring in the laminated sheet and changing the conveying direction of a conveyed sheet.
- In general, when manufacturing a laminated sheet with an adhesive layer between a base film and a cover film, an adhesive sheet in which an adhesive layer is formed on a base film is exposed in an intermediate process.
- In this intermediate process, the adhesive sheet cannot be interposed between a pair of conveying rollers. Therefore, such an
adhesive sheet 2 is conveyed by using asuction roller 3 as shown inFIG. 3 , so that thesuction roller 3 is only in contact with the surface of the base film layer and not in contact with the surface of the adhesive layer. - The
suction roller 3 in this case has a plurality of suction holes formed on the outer peripheral surface of a hollow cylindrical roller, for example. Theadhesive sheet 2 is held by suction on the outer peripheral surface by vacuum suction inside the shaft through the suction holes. Thesuction roller 3 holds and conveys theadhesive sheet 2 with rotation of the roller. See “Product Information Ni Net Suction Roll”, URL:http:www2s.biglobe.ne.jp/˜hikoyama/sakushon.htm (last verified Jan. 26, 2004). Thesuction roller 3 has the function of releasing the tension occurring in theadhesive sheet 2 by applying suction to and holding theadhesive sheet 2. - In the conventional method of conveying an
adhesive sheet 2 by only thesuction roller 3 as shown inFIG. 3 , it is necessary to-hold theadhesive sheet 2 by suction to maintain a central angle (hereinafter “winding angle”) of theadhesive sheet 2 when wound on thesuction roller 3. For example, anadhesive sheet 2 with the adhesive layer on the top surface which is conveyed in the direction of the arrow A cannot be conveyed in the direction of the arrow d because this would cause theadhesive sheet 2 to bend in the direction of the adhesive layer side. In such a case, theadhesive sheet 2 can be conveyed only in the direction in the directions of the arrows a to c which causes theadhesive sheet 2 to bend towards the non-adhesive side. - That the
adhesive sheet 2 can be conveyed only by bending theadhesive sheet 2 to the non-adhesive side (film side) not only limits the conveying route or passage itself, but also limits disposition of equipment on the conveying passage, and further causes the problem that such a conveying passage cannot be introduced into existing facilities. - For example, to be able to introduce the
adhesive sheet 2 into an existing dryer chamber or oven chamber, the position of the existingsuction roller 3 must be changed or anadditional suction roller 3 has to be added in order to increase the winding angle of theadhesive sheet 2 so that the tension of theadhesive sheet 2 can be released. If the position of thesuction roller 3 is changed, the transfer passage changes, and as a result, theadhesive sheet 2 cannot be introduced into an existing drier chamber or the like such that the tension has been released in theadhesive sheet 2. - When the angle of the conveying route is small, the winding angle of the
adhesive sheet 2 is also small, resulting in the net suction force applied to theadhesive sheet 2 being decreased. Therefore it causes the problem that the tension of theadhesive sheet 2 upstream is not sufficiently released, and thereafter thesuction sheet 2 slips on thesuction roller 3. - Accordingly, it is beneficial to provide a suction device which is capable of changing the conveying passage or route and is able to convey a laminated sheet without causing the laminated sheet to slip. This is accomplished by maintaining a sufficient suction force on the adhesive sheet irrespective of the direction taken by the conveying passage.
- The present invention achieves the above described objectives by providing a suction device which holds and conveys a sheet-shaped member. The suction device includes a suction roller which holds and conveys a laminated sheet having a coating layer formed on the sheet while holding the sheet on an outer peripheral surface, and a vacuum chamber having a concave shaped suction part which holds the aforesaid laminated sheet while closely holding the sheet in a concave shape. The vacuum chamber is disposed so that the suction part is upstream in the conveying direction from the suction roller in order to form an S-shaped conveying passage with the outer peripheral surface of the suction roller. Furthermore, the present invention provides a method of conveying a laminated sheet having a coating layer formed on the sheet, including the steps of holding and conveying the laminated sheet in a concave shape, and thereafter, holding and conveying the laminated sheet in a convex shape.
- According to the present invention, the conveying passage of a laminated sheet can be changed as needed. The invention includes an S-shaped conveying passage in cross-section formed by the combination of a suction roller for holding and conveying a laminated sheet and a vacuum chamber having a concave shaped suction part for holding a laminated sheet. Moreover, the present invention can convey a laminated sheet without the laminated sheet slipping irrespective of the direction of the conveying passage, because a sufficient suction force is provided by both the suction roller and the vacuum chamber.
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FIG. 1 is a front view showing an exemplary construction of a suction device; -
FIG. 2 is a perspective view showing an exemplary construction of a vacuum chamber;; and -
FIG. 3 is a view showing a conventional method for conveying an adhesive sheet using a suction roller. - Hereinafter, examples of the suction device will be described in detail.
- As shown in
FIGS. 1 and 2 , a suction device 1 is installed at the spots where a conveying passage of anadhesive sheet 2 is changed, and/or where tension of theadhesive sheet 2 should be released, in an intermediate process step of conveying the adhesive sheet (laminated sheet) 2. Theadhesive sheet 2 comprises an exposed adhesive layer (coating layer) formed on the surface of one side of a base film (sheet). This suction device comprises asuction roller 3 and avacuum chamber 10, which are constructed as a set. - The
suction roller 3 is a hollow cylindrical roller similar to ordinary rollers in which a plurality of suction holes is formed on the outer peripheral surface. The inside thereof is sufficiently hollow to enable a vacuum pump (not shown) to produce suction at the holes. Such asuction roller 3 holds theadhesive sheet 2 by suction through the suction holes formed on the outer peripheral surface of thesuction roller 3 while contacting the surface of the non-adhesive side of the base film. Thesuction roller 3 holds theadhesive sheet 2 by suction and conveys it with rotation. - The
vacuum chamber 10 is in a hollow box-shape which holds theadhesive sheet 2 by suction. The inside of thevacuum chamber 10 is constructed to allow evacuation by a vacuum pump (not shown). The section force of thevacuum chamber 10 with respect to theadhesive sheet 2 is set at a desired value by pressure adjustment of the vacuum pump. In one example, the suction force of thevacuum chamber 10 is set to be larger than the tension force occurring to theadhesive sheet 2 upstream in the conveying direction (hereinafter “upstream side”), and the suction force has the function of releasing the tension. - A suction support part (suction part) 11 has a concave surface (for example, a partial-circle shaped surface) at the front face portion of the
vacuum chamber 10.Guide parts 12 having a concave surface extending beyond the surface of thesuction support part 11 are formed at both sides of thesuction support part 11. Thesuction support part 11 comprises a double curved surface structure, and includes asuction part 13 at the inside and a conveying and supportingpart 14 on the outside. - In the
suction part 13, a plurality ofsuction holes 13 a are arranged in a predetermined pattern on the concave plate to form aconcave suction surface 13A, so that theadhesive sheet 2 by means of the surface on the non-adhesive side of the base film, is uniformly held by suction through thesuction holes 13 a of theconcave suction surface 13A. - In the conveying and supporting
part 14, a plurality of rotary shafts (rotary bodies) 14 a pivotally supported at both sides by theguide parts 12 are, for example, horizontally provided at specific intervals, resulting in aconcave support surface 14A. By this surface arrangement, anadhesive sheet 2 is movably supported while held in a concave manner on theconcave support surface 14A. In this example, the respectiverotary shafts 14 a are disposed so that theconcave support surface 14A becomes coaxial with theconcave suction surface 13A. - The
vacuum chamber 10 is disposed in the vicinity upstream of thesuction roller 3 so that theconcave support surface 14A connects to the outer peripheral surface of thesuction roller 3 to form a conveying route S-shaped in cross-section. - Suction device 1 holds the
adhesive sheet 2 by a suction force shown by arrows Q inFIG. 1 , holding anadhesive sheet 2 against theconcave support surface 14A of thevacuum chamber 10. Thesuction roller 3 holds and conveys anadhesive sheet 2 by providing a suction force in the centripetal direction and by providing a conveying force in a tangential direction to theadhesive sheet 2 when it is on the outer peripheral surface of thesuction roller 3, as shown inFIG. 1 . - The radius of curvature of the
concave support surface 14A of thevacuum chamber 10 can be chosen irrespective of the radius of the outer peripheral surface of thesuction roller 3. In one example, the radius of curvature of theconcave support surface 14A is about the same as the radius of the outer peripheral surface of thesuction roller 3. The necessary central angle of theconcave support surface 14A is relative to the relationship between the position of thesuction roller 3 and the set pressure of the vacuum pump. It is large in the case of large suction forces on theadhesive sheet 2. The central angle is set at 180° in this example, whereby the conveying passage of theadhesive sheet 2 is inversed by 180°. - Next, as shown in
FIG. 1 , is the case where anadhesive sheet 2 with the adhesive layer on the top surface is conveyed from the upstream side (left side inFIG. 1 ) to the downstream side (right side inFIG. 1 ) with respect to the suction device 1. A method of conveying the laminated sheet of the present example is hereafter described. - In the conveying method of the adhesive sheet (laminated sheet) 2 of this example, the
adhesive sheet 2 is held by suction and conveyed while the base film (sheet) is in close contact with thevacuum chamber 10 in a concave shape. This results in a reverse of the conveying direction. Thereafter, theadhesive sheet 2 is held and conveyed by thesuction roller 3 while the base film is in close contact with the outer periphery of thesuction roller 3 giving the adhesive sheet 2 a convex shape. - Here, the
vacuum chamber 10 is disposed in the vicinity to the lower right of thesuction roller 3 inFIG. 1 , and theconcave support surface 13A of thevacuum chamber 10 connects to the outer peripheral surface of thesuction roller 3 via an inflection point tangential line such that the conveying passage forms an S-shape in cross-section. - Hereinafter, several kinds of conveying passages for the
adhesive sheet 2 will be described. - When the
adhesive sheet 2 is conveyed via a conveying passage S1 heading in the direction of the arrow A inFIG. 1 and thereafter in the direction of the arrow B which is parallel with the direction of the arrow A, the conveying passage S1 is divided into a plurality of conveying branch passages as it passes from a point P1 to point P7. - Here, the conveying branch passages P1 to P2 are conveying passages on the
concave support surface 14A of thevacuum chamber 10. Here, the uniform suction force Q acts on theconcave suction surface 13A by vacuum from thesuction part 13. By this suction force Q, theadhesive sheet 2 is held against the entire surface of theconcave support surface 14A to cause its film surface to be in close contact with therotary shafts 14 a. Theadhesive sheet 2 is thus in the state in which it is tangentially movable on each of therotary shafts 14 a. - The conveyer passages P3 to P7 are the conveying passages on the outer peripheral surface of the
suction roller 3. Here, uniform suction force acts through the outer peripheral surface of thesuction roller 3 by suction in the inside of the shaft of thesuction roller 3. By this suction force, theadhesive sheet 2 is held through the range of P3 to P7 of the outer peripheral surface, and its film surface is brought into close contact with the outer peripheral surface of thesuction roller 3. - By rotation of the
suction roller 3, the conveying force in the tangential direction acts on theadhesive sheet 2, and theadhesive sheet 2 is fed in the direction of the arrow B via point P7 while theadhesive sheet 2 is rotated with thesuction roller 3 by the above-mentioned conveying force. - As mentioned above, the
adhesive sheet 2 is laid on the two conveying passages each in the shape of the concave curved surface connected with the inflectional tangent while being held by thevacuum chamber 10 and thesuction roller 3, and is held and conveyed by thesuction roller 3. The tension occurring to theadhesive sheet 2 on the upstream side of the point P1 is released by the suction force through theconcave support surface 14A, and the tension is newly set during the range from P3 to P7 on the outer peripheral surface of thesuction roller 3 by various factors such as the suction force and rotational speed of thesuction roller 3. - When the
adhesive sheet 2 is conveyed via the conveying passage S2 heading first in the direction of the arrow A and thereafter in the direction of arrow C diagonally upward inFIG. 1 , the conveying passage S2 passes from the point P1 to the point P6. The conveying passage S2 differs from the above described conveying passage S1 because the suction force and the conveying force do not act on theadhesive sheet 2 in the range from P6 to P7 on the outer peripheral surface of thesuction roller 3. - Similarly to the above, when the
adhesive sheet 2 is conveyed via the conveying passage S3 heading first in the direction of the arrow A and thereafter in the direction of the arrow D vertically upward, the conveying passage S3 passes from P1 to P5. When theadhesive sheet 2 is conveyed via a conveying passage S4 heading first in the direction of the arrow A and thereafter in the direction of the arrow E diagonally upward, the conveying passage S4 passes from P1 to P4. - As described above, the range of the conveying direction with respect to the
adhesive sheet 2 conveyed from direction A is changeable between the direction of arrow B and the direction of arrow E. In order to enlarge this range, it is necessary to increase the winding angle of theadhesive sheet 2 with respect to thesuction roller 3 and to pull theadhesive sheet 2 in the direction of the arrow B′ diagonally downward from the direction of arrow B. - To make the central angle of the
concave support surface 14A larger than 180°, thesuction roller 3 is moved diagonally downward, whereby the point P4 moves to the point P4′ which is diagonally downward from the point P4, and the conveying passage moves from the direction of arrow E to the direction of E′ which is diagonally downward from the direction of arrow E. - In this case, the insufficient amount of suction force and conveying force caused by the decrease in the winding angle of the
adhesive sheet 2 must be compensated by the suction force of thevacuum chamber 10 by an increase in the diameter of thesuction roller 3 and by an increase in pressure of the vacuum pump. - If a plurality of suction devices 1 are properly disposed at a point where the conveying direction changes or where the tension in the
adhesive sheet 2 should be released, the conveying direction of theadhesive sheet 2 conveyed from an unprescribed direction is unconstrained. is A decrease in the winding angle of theadhesive sheet 2 can be eliminated by disposing the plurality of suction devices 1. - According to the above described example, when the
adhesive sheet 2 having an exposed adhesive layer is held and conveyed, the conveying passage ofadhesive sheet 2 can be changed as desired by increasing or decreasing the winding angle ofadhesive sheet 2 on thesuction roller 3 which is positioned downstream in the conveying path. This follows because the S-shaped conveying passage is formed from the combination of thesuction roller 3 for holding and conveying and thevacuum chamber 10 having aconcave support surface 14A for vacuum holding. - Moreover, according to this example, a sufficient suction force can be secured with both the
suction roller 3 and thevacuum chamber 10 irrespective of the direction of the conveying passage, and therefore, theadhesive sheet 2 can be conveyed without slippage. - According to this example, the
concave support surface 14A formed by the arrangement of therotary shafts 14 a is located at the outside of theconcave suction surface 13A of thesuction part 13. Therefore, the rotational driving force of thesuction roller 3 can be reduced by decreasing the contact resistance of theadhesive sheet 2. - Further, according to this example, the suction force of the
vacuum chamber 10 is set to be larger than the upstream tension occurring in theadhesive sheet 2 because the tension can be released only by thevacuum chamber 10. Thereafter the tension in theadhesive sheet 2 can be varied by changing the setting of various factors relating to thesuction roller 3. - The present invention is not limited to the above described examples, and various changes and the like can be made while staying within the scope of the invention.
- In the above examples, it is preferable to provide the rotary body which supports the laminated sheet in a curved shape at the suction part in order to reduce the contact resistance of the laminated sheet. The rotary body is not limited to the rotary shaft of the above described examples, but may be a plurality of rotary rollers supported on a shaft such as beads on an abacus. In order to increase the suction force on the laminated sheet, the adhesive sheet may be curved in a concave manner and directly brought into close contact with the suction part.
- Laminated sheets to which the present invention can be applied may be any sheet as long as it can be held by only one side surface, and such laminated sheets include not only adhesive sheets in which an adhesive layer is formed on a base film but also magnetic film with a magnetic layer (coating layer) formed on the film.
- The above examples can be utilized in a device which manufactures adhesive sheets, and laminated sheets such as magnetic film.
Claims (5)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004108794A JP4092302B2 (en) | 2004-04-01 | 2004-04-01 | Suction device |
JP2004-108794 | 2004-04-01 | ||
PCT/JP2005/005865 WO2005095241A1 (en) | 2004-04-01 | 2005-03-29 | Suction apparatus and method for transferring laminated sheet |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/005865 Continuation WO2005095241A1 (en) | 2004-04-01 | 2005-03-29 | Suction apparatus and method for transferring laminated sheet |
Publications (2)
Publication Number | Publication Date |
---|---|
US20070013122A1 true US20070013122A1 (en) | 2007-01-18 |
US7367560B2 US7367560B2 (en) | 2008-05-06 |
Family
ID=35063647
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/523,592 Active US7367560B2 (en) | 2004-04-01 | 2006-09-20 | Suction device and method of conveying laminated sheet |
Country Status (6)
Country | Link |
---|---|
US (1) | US7367560B2 (en) |
EP (1) | EP1731457A4 (en) |
JP (1) | JP4092302B2 (en) |
KR (1) | KR101098048B1 (en) |
CN (1) | CN100503399C (en) |
WO (1) | WO2005095241A1 (en) |
Cited By (3)
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US20090066015A1 (en) * | 2007-09-07 | 2009-03-12 | Duplo Seiko Corporation | Paper transport apparatus |
US20120224012A1 (en) * | 2011-03-03 | 2012-09-06 | Takahiro Inoue | Sheet conveying device and ink jet recording apparatus |
US20180332961A1 (en) * | 2017-05-18 | 2018-11-22 | Edible Education Llc | Wheeled kitchen apparatus with collapsible work surface |
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DE102005023258A1 (en) * | 2004-11-16 | 2006-11-23 | Fan Separator Gmbh | Rotary drum for aerobic heating of free-flowing solids |
JP2009012943A (en) * | 2007-07-05 | 2009-01-22 | Duplo Seiko Corp | Paper reversing and conveying mechanism and paper reversing and conveying device |
DE102010012084A1 (en) * | 2010-03-19 | 2011-09-22 | Sms Siemag Ag | Method and device for feeding a separating layer onto a metal strip |
CN102452567A (en) * | 2010-10-20 | 2012-05-16 | 富葵精密组件(深圳)有限公司 | Flexible circuit board transmission device |
JP6371527B2 (en) * | 2014-01-07 | 2018-08-08 | 富士機械工業株式会社 | Coating equipment |
JP6350453B2 (en) * | 2015-08-28 | 2018-07-04 | 株式会社村田製作所 | Web transport device |
JP6645457B2 (en) * | 2017-02-28 | 2020-02-14 | 株式会社村田製作所 | Web processing equipment |
JP7148181B1 (en) | 2021-07-13 | 2022-10-05 | 株式会社メック | Inspection jig and inspection method |
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US20180332961A1 (en) * | 2017-05-18 | 2018-11-22 | Edible Education Llc | Wheeled kitchen apparatus with collapsible work surface |
Also Published As
Publication number | Publication date |
---|---|
JP2005289599A (en) | 2005-10-20 |
CN100503399C (en) | 2009-06-24 |
JP4092302B2 (en) | 2008-05-28 |
WO2005095241A1 (en) | 2005-10-13 |
CN1774379A (en) | 2006-05-17 |
KR101098048B1 (en) | 2011-12-26 |
KR20060132971A (en) | 2006-12-22 |
EP1731457A1 (en) | 2006-12-13 |
US7367560B2 (en) | 2008-05-06 |
EP1731457A4 (en) | 2010-01-27 |
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